99915543105 has 64 divisors (see below), whose sum is σ = 192479846400. Its totient is φ = 43235424000.

The previous prime is 99915543097. The next prime is 99915543109. The reversal of 99915543105 is 50134551999.

It is not a de Polignac number, because 99915543105 - 2³ = 99915543097 is a prime.

It is a super-2 number, since 2×99915543105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99915543109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2431480 + ... + 2472230.

It is an arithmetic number, because the mean of its divisors is an integer number (3007497600).

Almost surely, 2^99915543105 is an apocalyptic number.

99915543105 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99915543105 is the 258090-th pentagonal number.

It is an amenable number.

99915543105 is a deficient number, since it is larger than the sum of its proper divisors (92564303295).

99915543105 is a wasteful number, since it uses less digits than its factorization.

99915543105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42014.

The product of its (nonzero) digits is 1093500, while the sum is 51.

The spelling of 99915543105 in words is "ninety-nine billion, nine hundred fifteen million, five hundred forty-three thousand, one hundred five".